Related Files

The vulnerability described in this document could hypothetically be exploited by unprivileged code running in a VMware virtual machine (guest) in order to execute code in the host VMX process, thereby breaking out of the virtual machine; however, such exploitation has not been proven.

Secunia Security Advisory - Ubuntu has issued an update for linux-lts-backport-natty. This fixes multiple vulnerabilities, which can be exploited by malicious, local users in a guest virtual machine and malicious, local users to cause a DoS (Denial of Service).

The vulnerability described in this document could hypothetically be exploited by unprivileged code running in a VMware virtual machine (guest) in order to execute code in the host VMX process, thereby breaking out of the virtual machine; however, such exploitation has not been proven. In the event that arbitrary code execution in the VMX process is possible, kernel privileges can be obtained on a Windows host by abusing the VMX process's special access to a VMware driver, meaning the maximum possible impact of this vulnerability is elevation from unprivileged guest code execution to host kernel code execution.

Secunia Security Advisory - Two vulnerabilities have been reported in VMware Workstation, VMware Player, and VMware Fusion, which can be exploited by malicious, local users in a guest virtual machine to gain escalated privileges.

Secunia Security Advisory - Multiple vulnerabilities have been reported in VMware ESX Server and VMware ESXi, which can be exploited by malicious, local users in a guest virtual machine to gain escalated privileges and by malicious people to cause a DoS (Denial of Service) and potentially compromise a vulnerable system.

Red Hat Security Advisory 2012-0533-01 - Samba is an open-source implementation of the Server Message Block or Common Internet File System protocol, which allows PC-compatible machines to share files, printers, and other information. A flaw was found in the way Samba handled certain Local Security Authority Remote Procedure Calls. An authenticated user could use this flaw to issue an RPC call that would modify the privileges database on the Samba server, allowing them to steal the ownership of files and directories that are being shared by the Samba server, and create, delete, and modify user accounts, as well as other Samba server administration tasks.

Red Hat Security Advisory 2012-0531-01 - The rhev-hypervisor6 package provides a Red Hat Enterprise Virtualization Hypervisor ISO disk image. The Red Hat Enterprise Virtualization Hypervisor is a dedicated Kernel-based Virtual Machine hypervisor. It includes everything necessary to run and manage virtual machines: A subset of the Red Hat Enterprise Linux operating environment and the Red Hat Enterprise Virtualization Agent. Note: Red Hat Enterprise Virtualization Hypervisor is only available for the Intel 64 and AMD64 architectures with virtualization extensions. A flaw was found in the way libtasn1 decoded DER data. An attacker could create carefully-crafted DER encoded input that, when parsed by an application that uses libtasn1, could cause the application to crash.

Secunia Security Advisory - Ubuntu has issued an update for the kernel. This fixes multiple vulnerabilities, which can be exploited by malicious, local users and malicious, local users in a guest virtual machine to cause a DoS (Denial of Service).

Secunia Security Advisory - Ubuntu has issued an update for linux-lts-backport-oneiric. This fixes multiple vulnerabilities, which can be exploited by malicious, local users and malicious, local users in a guest virtual machine to cause a DoS (Denial of Service).

Secunia Security Advisory - VMware has acknowledged some vulnerabilities in VMware ESX Server, which can be exploited by malicious, local users in a guest virtual machine to gain escalated privileges and by malicious people to cause a DoS (Denial of Service) and potentially compromise the vulnerable system.

Ubuntu Security Notice 1425-1 - Sasha Levin discovered a flaw in the permission checking for device assignments requested via the kvm ioctl in the Linux kernel. A local user could use this flaw to crash the system causing a denial of service. Stephan discovered a flaw in the KVM (kernel-based virtual machine) subsystem of the Linux kernel. A local unprivileged user can crash use this flaw to crash VMs causing a deny of service. Various other issues were also addressed.

Ubuntu Security Notice 1426-1 - Sasha Levin discovered a flaw in the permission checking for device assignments requested via the kvm ioctl in the Linux kernel. A local user could use this flaw to crash the system causing a denial of service. Stephan discovered a flaw in the KVM (kernel-based virtual machine) subsystem of the Linux kernel. A local unprivileged user can crash use this flaw to crash VMs causing a deny of service. Various other issues were also addressed.

Secunia Security Advisory - SUSE has issued an update for the kernel. This fixes multiple vulnerabilities, which can be exploited by malicious, local users and malicious, local users in a guest virtual machine to cause a DoS (Denial of Service) and gain escalated privileges and by malicious people to cause a DoS.

Secunia Security Advisory - Ubuntu has issued an update for linux-ec2 and linux. This fixes some vulnerabilities, which can can be exploited by malicious, local users and malicious, local users in a guest virtual machine to cause a DoS (Denial of Service).

This Metasploit module exploits a vulnerability found in TFTP Server 1.4 ST. The flaw is due to the way TFTP handles the filename parameter extracted from a WRQ request. The server will append the user-supplied filename to TFTP server binary's path without any bounds checking, and then attempt to open this with a fopen(). Since this isn't a valid file path, fopen() returns null, which allows the corrupted data to be used in a strcmp() function, causing an access violation. Since the offset is sensitive to how the TFTP server is launched, you must know in advance if your victim machine launched the TFTP as a 'Service' or 'Standalone' , and then manually select your target accordingly. A successful attempt will lead to remote code execution under the context of SYSTEM if run as a service, or the user if run as a standalone. A failed attempt will result a denial-of-service.

Secunia Security Advisory - Ubuntu has issued an update for the kernel. This fixes two vulnerabilities, which can be exploited by malicious, local users and malicious, local users in a guest virtual machine to cause a DoS (Denial of Service).

Red Hat Security Advisory 2012-0478-01 - Samba is an open-source implementation of the Server Message Block or Common Internet File System protocol, which allows PC-compatible machines to share files, printers, and other information. A flaw in the Samba suite's Perl-based DCE/RPC IDL compiler, used to generate code to handle RPC calls, resulted in multiple buffer overflows in Samba. A remote, unauthenticated attacker could send a specially-crafted RPC request that would cause the Samba daemon to crash or, possibly, execute arbitrary code with the privileges of the root user.

Secunia Security Advisory - Ubuntu has issued an update for linux-lts-backport-maverick. This fixes two vulnerabilities, which can be exploited by malicious, local users and malicious, local users in a guest virtual machine to cause a DoS (Denial of Service).

Ubuntu Security Notice 1422-1 - Sasha Levin discovered a flaw in the permission checking for device assignments requested via the kvm ioctl in the Linux kernel. A local user could use this flaw to crash the system causing a denial of service. Stephan discovered a flaw in the KVM (kernel-based virtual machine) subsystem of the Linux kernel. A local unprivileged user can crash use this flaw to crash VMs causing a deny of service. Various other issues were also addressed.

Ubuntu Security Notice 1421-1 - Sasha Levin discovered a flaw in the permission checking for device assignments requested via the kvm ioctl in the Linux kernel. A local user could use this flaw to crash the system causing a denial of service. Stephan discovered a flaw in the KVM (kernel-based virtual machine) subsystem of the Linux kernel. A local unprivileged user can crash use this flaw to crash VMs causing a deny of service. Various other issues were also addressed.

Red Hat Security Advisory 2012-0466-01 - Samba is an open-source implementation of the Server Message Block or Common Internet File System protocol, which allows PC-compatible machines to share files, printers, and other information. A flaw in the Samba suite's Perl-based DCE/RPC IDL compiler, used to generate code to handle RPC calls, resulted in multiple buffer overflows in Samba. A remote, unauthenticated attacker could send a specially-crafted RPC request that would cause the Samba daemon to crash or, possibly, execute arbitrary code with the privileges of the root user.

Red Hat Security Advisory 2012-0465-01 - Samba is an open-source implementation of the Server Message Block or Common Internet File System protocol, which allows PC-compatible machines to share files, printers, and other information. A flaw in the Samba suite's Perl-based DCE/RPC IDL compiler, used to generate code to handle RPC calls, resulted in multiple buffer overflows in Samba. A remote, unauthenticated attacker could send a specially-crafted RPC request that would cause the Samba daemon to crash or, possibly, execute arbitrary code with the privileges of the root user.